文献类型：期刊文献

英文题名：Comparative analysis of two Porphyridium species for phycobiliprotein and polysaccharide production under different photoperiods

作者：Ji, Liang[1];Xu, Luxuan[1];Chen, Zhangzhen[1];He, Yulong[1];Manyakhin, Artem Yurevich[4];Cheng, Pengfei[5];Sun, Liyun[1,2];Fan, Jianhua[1,2,3]

机构：[1]East China Univ Sci & Technol, State Key Lab Bioreactor Engn, 130 Meilong Rd, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Dept Appl Biol, 130 Meilong Rd, Shanghai 200237, Peoples R China;[3]Shihezi Univ, Sch Chem & Chem Engn, State Key Lab Incubat Base Green Proc Chem Engn, Shihezi 832003, Peoples R China;[4]Russian Acad Sci, Fed Sci Ctr East Asia Terr Biodivers, Far Eastern Branch, Vladivostok 690022, Russia;[5]Ningbo Univ, Coll Food Sci & Engn, Ningbo 315211, Zhejiang, Peoples R China

年份：2025

卷号：12

期号：1

外文期刊名：BIORESOURCES AND BIOPROCESSING

收录：;EI(收录号：20260119849244);WOS:【SCI-EXPANDED(收录号:WOS:001647976600001)】；

基金：This work was sponsored by National Key Research and Development Project of China 2025YFA0921100, Natural Science Foundation of Shanghai 24ZR1490800, Ningbo "Innovation Yongjiang 2035" Key R&D Programme-International Sci-tech Cooperation Projects 2024H002, Funding Project of the State Key Laboratory of Bioreactor Engineering and Shanghai Collaborative Innovation Center for Biomanufacturing Technology.

语种：英文

外文关键词：Porphyridium purpureum; Porphyridium aerugineum; Phycoerythrin; Phycocyanin; Polysaccharide

摘要：Phycobiliproteins and microalgal exopolysaccharides serve as natural pigments and functional additives in food applications. Current production primarily relies on multicellular algae, where yields are constrained by challenges in achieving high-density cultivation. This study investigated photoperiod effects on growth and production of phycobiliproteins and polysaccharides in two unicellular red algae (Porphyridium purpureum and Porphyridium aerugineum). Results demonstrated that short photoperiods enhanced the accumulation of core phycobiliproteins, specifically by increasing phycoerythrin in P. purpureum to a maximum of 30.5 +/- 0.8 mg/g DW and phycocyanin in P. aerugineum to 41.9 +/- 0.2 mg/g DW. Conversely, long photoperiods promoted biomass accumulation, yielding peak phycoerythrin production (140.6 +/- 0.9 mg/L) in P. purpureum and phycocyanin (137.7 +/- 1.2 mg/L) in P. aerugineum at day 12. Both species exhibited superior exopolysaccharide production under long photoperiods, though P. purpureum showed significantly higher productivity (898.7 +/- 41.0 mg/L at day 20). These findings offer strategic solutions for sustainable production of food-grade pigments and polysaccharides through optimized unicellular algal cultivation.